Selektivita jištění elektrozařízení povrchového lomu

Abstract

This final thesis deals with the historical development of protection, high voltage circuit breakers, distribution of electricity, sorting protections, requirements on the protection and basic protections members. It also deals with calculation of short-circuit currents and selectivity for the protection of K 10000 giant machine powered by free guidance 35kV substation No. V3532 from TR1, further guidance 35kV cable from the mobile substation DT 76. The first part describes the historical development of protection of external high voltage lines and distribution of electricity, protection division and requirements for protection and basic protections members. In the second part, there is described a short circuit, types of short circuits and a theoretical analysis of the calculation of short circuit currents. In the third part of the work, I have described No. 32 dungeon equipment that supplies power to free guidance and V3532 mobile substation from DT 76 which is powered by a K 10000 machine 35kV cable line.

The fourth section lists the parameters of free lines, wiring a power transformer to transformer TR1 and the giant machines powered K10000 as well as calculation of short circuit currents and selectivity of protection for the above giant machine.